Fluid delivery apparatus



Sept. 12, 1933. G A KNAAK 1,926,726

` FLUID DELIVERY APPARATUS Filed Aug. 9, 1930 i 4therefrom mechanism, such as natural or articial gas,

Patented Sept. 12,l 1933 .i

f www'*listers- ,A I l Y. l n 1926,726 M FLUID DELIVERY' ePreRAfrUs George A. Knaak, Milwaukee, Wis.

' Apprenti@ August 9, 1eeo. s`eria1 No; sfolaims. (errati- 735i The inventionrelates touid delivery apparatus and a fluids. EV

The apparatus to which the invention applies i 5 in particularfhas apower plant for compressing `the uid, a mechanism for delivering thefluid, and a `pipe for transporting Ythe compressed yfduid fromthe powerplantto the deliverymecha- IliSm- Y, L

The invention maybe Yemployed todeliver any compressible fluid andtoremove foreign matter before ythe Asame enters thedelivery Vwhich is transported at high pressures through Y 1 pipes andthenI delivered at lower pressures for distribution or consumption.; -The inventionis ordinarily applied to a tire inflating apparatus .Which has a deliveryfr'nech-V anism to control the flow of compressed air inte the tire andto limit the ultimate pressure therein.-

Such an apparatus has a power driven com,n pressor and a storage or equalizing tank which are usually arranged `Within a` protecting structure,

out of doors, a pipe which connects` the delivery mechanism to `the tank and vis usually buried underground, and a service hose forconnecting the deliverymechanism to the tire.

carriedK thereby condenses uponthe Walls of .the

tank, andthe connecting pipe and collects in the lower parts thereof, andthis condensate causes oxidation of .thel interior .ofthe ytank and pipe D which eventually contain a largequantity ofV iron oxide. r i

- If the connectingrv pipe isprovided'with a trap for removing the condensate therefrom, the

tuallyclog the delivery I nechanismr and preventV it from functioning; A l Also, the ironoxide and ycondensate sometimes 'forms a layer of thinpaste' Vupon the- Wallslof the verticalpipe which leads intothe delivery mechanism, andthis paste is carried upwardly` bythe .pulsations of the air stream and eventually enters the delivery mechanism and clogs thesame.

method of delivering compres'sible av delivery mechanism whichl isusually arranged 1 stream of compressed air-owing therethroughA 'matter vWhich has he Dueto the connecting pipe being buried under; ground, the compressed air flowing. there! through is Warmer in cold Weather than the delivery .mechanism, and a part `of thenioisture carried by the compressedfair iscondensed after 69 it enters the` 'delivery densate `thus produced pedes the operation 4or renders it'totallyinoperative`` t,

mechanism, and the con# freezes and seriously im-y of 'the delivery f mechanism An object of the `invention kisteriniveiit `solids carried by 'the air lstream `f1fom" being deposited within the delivery mechanism. Y. Y

Another v object -is to `.prevent condenfsation4v [Within the delivery mechanismof moisture c are 170 ried bytheuid stream.

Another l object is to` provide i yaV chamber in Which condensible andprecipitable mattermay Another Vobject is'fto interrupt'the. velocity of cause precipitation of for- 5 eignV matter carriedthereby'.

i Another object is to change the temperature .l

of the compressed air tosubstantially that of the delivery mechanism same. n

` Another object is t before the` airj enters the 80 o "provide apparatus of this character which may be readily incorporated'in existing air delivery When air is compressed, itsA moisture carrying capacityis reduced anda part ofthe moisture VAccording to the @11am-i361? S arelged underV pressure 'and apparatus@ inventionp a. precipitation' Y betwllh source of fluid 8.5 the' delivery mechanism to interrupt :thev'elocity ofthe fluidjstream and cause foreign'fmattercarriedtherebyto be'p're- `c :ipitated Within the chamber.

. i .9 It further 'contemplates subjecting the precipo itating. ehamber to atmospheric conditions as, v the "mism- After the air enters Vits velocity is Areduced `and particles ofy solid matter carried therein abledto precipitate.`

During cold- Weather, the'airhasits temperathe same temperature and f delivery Imechaf the precipitationV chamber,

by 1 entrainment l are jenture reduced by being. exposedto .theatmospheric temperature anditsmoisture contentvvill The moisture The result obtaine bert-:duced by condensation. precipitated 'by condensation C will `'precipitate by entrainment, particles of Vforeign matter vvhich do not'have to "be precipitated by gravity'.

Vsuliicient Weight d by this invention is' that the delivery mechanism is kept free fromforeign operation thereof.

retofore interfered with the The accompanying drawing illustrates the invention and theviews therein are las follows:

Fig. 1 is a schematic drawing of a tire iniiating apparatus embodying the invention, the air tower being shown partly in vertical,` section.

Fig. 2 isa Verticalsection through the base of the tower. f l i The apparatus has a primaryair supplyf or power `unitwhich comprises a storage kor :equalizing tank 1, an air compressor 2/toisupply compressed air to the tank 1, and an elec-tricmotor 3 to drive the compressor.

The power unit is a. buildingl to'protect it from lowtemperatures;

and the tank 1 is connected' to 'ajtire yinflator v4v by an airk supply pipe 5 which y'is buriedinthe" ground beneath a pavements@ s The tire inilator 4 is supported uponthe pave-7"" ment 6 and has a hollow base 7, a tubul'arstandard 8 arransedpupnihe ,base 'L a deur-ery mechanism or' fluid meter 9 carriedrby the standard a/column lil-.carried 'by the f'casing offthe delivery mechanism 9', an arm lllrpivoted" upon the upper vend .oi the column 110, and aservicehos e 1'2 carriedby the armll.` Y ,Y

" Compressed air 'is deliveredjto` a tire' 13 through'the service hose ,12 whic'hhas one of its ends connected to'the'outlet ofthe delivery mech'- anism 9 -and its ot enend provided with a valve Y' vgchificfk"115i" o'r connection' 'with the yalvev stem of n f The standardjjB-l'is'closed at .both endsan'd ',orms* a `self'iondary Jair' supply s orjprecipitation f Y'chamber Vl5,"wh"ich is connected atlits lower end .to

thesupply pipe ,5 and ,connected atl-itsfupper end tothel'delivery mechanismj by .pipe v16.

Thedeliver'y mechanism 9 is lsimilar .tothefluidmeter disclosedin my copending application,

serial warentest; niegiiApiiii 2,4, lasagna provides an intermediate or. measuring chamber" 1*?r which is charged with Lcompressed airuntil the `'pressure 1therein, reaches apredeitermined maximum, ,then communication between and f the and its fluid contents is ldischargedinto theV tire .1.3 until the filui'd pressure yintle delivery mechanism 4flvire'ac'hes jtermined maximumpressure.

' a pr'ec'le'termined minimum, and Vtlien the.,delivery oi`l air, to the tire 13 is discontinuediand `communi- '.-cation with the chamber`15 is reestablishedto recharge the del'very `mechan`ism9 to .the'predei l A of. compressed air arertlius delivered toifthetire 13 111'17G1'ther`pressure therein has reached a1 predetermined maxiuSur'zcessivemeasured `charges mum, lwhichi-s determinedl by `the, adjustment of Lthe delivery-mechanism .9and then the delivery -mechanism/Qceases ito'functi'omasfullyfsetforth' A Y v i f `the,chamber'15jatjthe'bottomthereof and the collected' matter drained in my application referred to above. y Y f Whenfthe valve' chuck-114 iis-appliedstdthe kvalve Stem of the :tire 13,-;aport`ion-of .the secondary `supply of eompressed-.airfin the .chamber '15 'is discharged at av high velocity through the pipe l-into-the delivery mechanism'9and this air is mechanism 9. l

kParticles `of wateniron-oxide; and other ,foreign` matter,` which are carried upwardly by the velocity of the air stream and which would "Ordinarily the air stream-at this laden air.A

ordinarily arranged.` fthe moisture .carried by the Yair is condensed, and

than lthe Vsupply -line 5 and volume :of A`air, conseis mate-v rially-reduced between the and .the vdelivery Y .mum-.pressure in the inthe chamber r15 due to the 'low velocity of point'. t t The height ofthe lchamber 15 ordinarilyA precludes the possibility of particles ,of `foreign, matter being" carried into the delivery mechanism 9 by the air stream but, in some, instances however, the iron oxide in the air supply line is soy finely comminuted that-apart of it may be substantially held in suspension in moisture By directing the incoming air against the side walls ofthe chamber 15, as much asA possible of 'to lsubstantiauy that of the vdelivery mechanism Aby coming in contactrwith the cold side"-wal-ls The air may be directed against the sidewalls of the chamber15V by extending the supply line 5 upwardly into the chamber 15,`

' enter the deliverymechanism, are precipitatedA closing its upper Y endfand providing outlets V`-18f-in its vside walls. t

As a `urtluer safeguardagainst particles of.

foreign matter entering the'f'deli-very mechanism 9, a `fine mesh screen 'may-befinterposed between the inlet and the outlet Aofm'thi'e-c'hamber''15,` l Y rsuch'asja strainer 19attached to .the lowerV end'of thepipe 16; l

The chamber 15 mayfbe'prov-ided witha drain at its bottom for thefremovalof water and' sediment, and this drain mayV include ai trap 20 arranged beneaththe tire iniiator 4' and connected A t, y in the ehambe 15 W111i drain intorthe trap )20 through the lower outlets 1'8 and carry with. it @large-part oftheforeign 'i` Vmatter which'fhas 'been i precipitated in the cham- `The contents Vof the trap 20 maybe discharged throughja pipe 21 which -has its lower `end con- `nected tojthetrap 20 `and its upper v'end closed by a blow-ofi valve-22 and supportedfby thebase '7 ofthe tire inflator 4. D

` yByopening the valve 27,2, lvthe air pressure in the supplyl'ine- `will force thexlio'uid contents of the trapV 2Q v*out* s :through the'valvelzzand carry with'it'aflarge part of the precipitatedesolid matter. K Instead of draining the condensateand fprecipitate intor a trap and then discharging it 'by air pressure, afdrain cock-'23 maybe connected to -thezcockZ. :tl Y Y Y i A i Y The dangerof condensate forming inthe de'- `liveryfmechanism 9 'is furtherprecluded-by the factY that the moisture'carrying capacity Vof compressed air increases as thepressure thereof ld'ecreases; s Y, t l

` `The motor 3 is" automatically controlled to e operate the compressor" and A'maintain the' presnism. f

Consequently, the moisture carrying capacity Liao through Vthev pipe 21 and l tire is always lower than 'Y the maximumfpressure in the delivery mechaof theair increases as it passes` `into and through the delivery lmechanism'.

The invention herein set various modifications and departing from the scope thereof ashereafter claimed. d i y The inventionis hereby claimed as follows:

1. In combination, a compressed uid supply` source, a conduit of restricted cross-sectional area communicating with said source, a device for dispensing iiuid` from said source'iat regulated pressure, a receiver forming a velocity reducing passage of considerably greater cross-section than `thatof `said conduit interposed between said conduit and sai-d device, theconning wall of said passagedbeing exposed directly to the surrounding atmosphere and being of sufcient extent and conductivityto cause substantial modiication of the temperature of fluid iiow through said passage to conform with that of said atmosphere, and means for delivering fluid into the lower central portion of said receiver.

2. In combination, a compressed fluid supply source, a conduit of restricted cross-sectional area communicating with said source, a device for dispensing fluid from said source at regulated pressure, a receiver forming an upwardly extending 'velocity reducing passage of considerably greater cross-section than that of said conduit communicating at its lower end with said conduit and at its upper endvv` with said device, the confining wall of said-passage being .expose-d directly to thesurrounding atmosphere and being of sulficient extent and conductivity to cause substantial modification ofthe Vtemperature of iiuid flowing through said passagetovconform with that-of said Vatmosphere andfmeans for delivering'the -uid admitted to said receiver against the wall there- 3. Incombination, a Ycompressed fluidV supply source, a conduit of restricted cross-sectional area communicating with said source; a device for disl pensingfuid from said sourceat regulated pressure, a receiver .forming an upwardly Vextending velocity reducing Y passagefof considerably great- Ver cross-section than'that of said conduit. communicating with saiddevice, the confining wally of said passage being exposed directly to the surroundingatmosphere and being of sulcient exfoith is susceptible of` adaptations without cation of the temperature'of uidflowing through conduit outwardly against the lowerY portion of said confining wall. .Y i

v a 3 tent and conductivity to cause substantial modisaid passage to conform with that of said atmosl phere, and means for delivering iiuidfrom said 4. In' combination, va compressed liuidjsupplyv source, a conduit of restricted cross-sectional 5. In combination, a compressed` fluid supply l source, a conduit of restricted cross-sectional area communicating with said source, a device for dispensing'iiuid fromsaid source at regulated pressure, -a receiver tending velocity reducing passage of considerably greatercross-section than that of said conduit Vinterposed between said conduit and said device, means` for delivering iiuid from said conduit out'- wardly againstthe lower confining wall ofA said passage, and means for delivering fluid fromk the upper central device. i Y

6. In combination, a compressed portion of )said passage to "said uuid supply forming an upwardly exsource, aconduit ofiV restrictedV cross-sectional area for conducting fluid from said source, a de- .vice' for dispensing liiuid from said sourceat regulated pressure, a receiver forming structed upwardly extending velocity an unobreducing l passage of circular cross-section greater than that of said conduitinterposed between i duit and said device, theV conning wallof said passage` being of considerable lengthto form a substantially cylindrical chamber of extended' vertical height, means for Vdeliveringliuid from said conduit outwardly 'against the/lower portion of said passage confining wall, and Vmeans for delivering iiuid from' the upper saidl passage to said device.

GEORGE A.

said con- 1.2.0y central portion of 

